day. >> i didn't feel excited like i did in the last election, with sarah palin and john mccain. so after last night, i got that adrenaline going and i'm pumped up and ready to roll. >> we had a drendrenaline that wouldn't believe. >> reporter: mitt romney will spend three of the first five post-debate days in this battleground state. even here, romney supporters admit before the debate they were worried about polls that showed their candidate behind. even their enthusiasm was luke-warm. >> with romney, before last night, i would say we were 50%, 55%. after last night we're at 100%. >> last night was energizing. it was neat to see him answer questions clearly with detail on questions that i had questions about myself. >> reporter: but obama advisers know their target audience is undecided and swing voters. they quickly rolled out this ad that romney's tax plan wouldn't hurt the middle class. romney supporters are convinced their candidate has changed the course of this campaign. and some are changing their plans, too, to start actively working on his behalf. >> i feel he opened u